Formed in 1986 in California, Infest are an exemplary, pioneering powerviolence band (even though they didn’t use that term). Infest mix punk rock speed and social awareness with hardcore anger and in-your-face hostility. Vocalist Joe Denunzio screams about politics, conformity, and war. Their shows amount to non-stop violence and aggression, with non-stop stage diving, and moshing. Infest have been reunited since 2013 and if you haven’t seen them, they’re definitely worth your medical bills. This is their second MDF appearance.

The Melvins are an American band that formed in 1983. Since 1984, singer and guitarist Buzz Osborne (also known as King Buzzo) and drummer Dale Crover have been the band's ongoing members. The Melvins' music is influenced by Black Flag's mix of punk and metal on their album My War, and other slow punk acts like Swans, Flipper and Wipers, but also by some hard rock and metal bands such as Kiss and Alice Cooper; however, their idiosyncratic approach, bizarre sense of humor, and experimentation make neat categorization difficult.